PENG Xi-lin,ZHU Li-wei,LIU Xiao,et al.Impact of Enhanced Settlement in the Secondary Sedimentation Tank on the Stability of Sewage Treatment System[J].China Water & Wastewater,2021,37(10 10):111-115.
Impact of Enhanced Settlement in the Secondary Sedimentation Tank on the Stability of Sewage Treatment System
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
10 10
Page:
111-115
Column:
Date of publication:
2021-05-17
- Abstract:
- Aiming at the problems such as high effluent suspended solids (SS) in the secondary sedimentation tank, high-load operation of the next filtration process, high frequency of effluent SS reaching the indicator warning value, polyacrylamids (PAM) were added to the secondary sedimentation tank to enhance the settlement. As a result, the treatment efficiency of the secondary sedimentation tank and the stability of the effluent quality are improved. According to the analysis of the effect of different PAM dosages on poly aluminum chloride (PAC) dosage and the operation of secondary sedimentation tank, the greater the PAM dosage within a certain range for enhanced settlement resulting in the more stable the effluent SS and TP, the lower PAC dosage and overall chemical consumption. Thus the reduction of chemical sludge production has a greater contribution to the overall reduction of sludge production rate.
Last Update:
2021-05-17